Hoisting derrick



oct. 18, 1927i` 1,646,133 w. o. BECHMAN ET A1.

HOISTING DERRICK Filed Feb. 20. 1926 Patented Get. 18, 1927. Y

UNITED STATES n s j 1,646,133 vPATENTjF'PICE` WILLIAM o. BECHMAN AND FRANK G. KNUDsEN, or CHICAGO, ILLINoIs HorsriNG nERRroK.

Application vfiled. February-20,1926. Serial No. 89,532.

Our invention relates to hoisting` derricks, and particularly to a derrick for usek in-the hoisting of materials to the` floors of a building under construction.

terials4 thereinto.

Anotherobject is to provide such a der rick, which can'readily be adjusted tol any i size window opening, and which furthermore can quickly be knocked down and transported and fit-ted to another window opening with a `minimum of eifort.

A further object is to provide a simple and eiective means ior securing the derriok in a window opening.

` progresses.

Another object is to provide a novel adjustable pulley support for such a derrick.

Of course, other objects, likewise additionally advantageous, will appear to those skilled in this art.as the description hereof Thesevery desirable objects are achieved in the derrick hereinafter to be speciiically described. Brieiiy, the derrick comprises upright frame members placedY preferably,

' but not necessarily, upon the floor of a building'- inside of a window openingv and at each side thereof. These members are securely cla-mped to the inside wall. A crossr'bar is carried by these members, inside ofi the window opening, said bar being vertically adjustable. Two spaced, upwardly inclined'y frame membersv are secu-red to'the window frame or stone'sill and to the uprightframe.`

through the window opening, and upon the:

floor, or stone sill," to be unloaded. l.

@This brief description of ourV structure Vwill suiiice ior the present, and attention is now directed to the accompanying sheetof drawings, in which like reference characters denote like parts in the illustrative embodi- It is an objectto providev a simple and in-V expensive hoisting derrick which may bey easily mountedjin a .window opening of a` building for the purpose of hoisting-may mentofour invention disclose/mand Where- 1n:

Fig. 1 is a side elevational view, showing our improved derrick vmounted in operative positionin the window opening of a buildmg Figr), is av front elevational View, t

Fig. `3 is a detail topl sectionalview of also shown a floor 12, the usual stonesill 13,

and wood sill 14 of a window frameflf.

Uprights 16, oneat each side ofthe; window opening, are placed on `the insidek and rest preferably upon the floor l2, as "shown, the uprights extending considerably above the window opening. Means is provided for securing the upper ends ofthe uprights '16 tothe top part of the windowopening and trame, 1n the provision of a securing.

member made of two angle iron bars" 17, spaced apart byblocks 18', one at each end, and one in the middle. The barsv and blocks are bolted together by bolts 19 to leave a space between ythe bars, as shown, through which at each' end, betweenthe end blocks y I,the securing means, as seen along theline ll-- 18 and inner block 18, arearranged rclamps inthe form of threadedhook bolt fastening devices 20, which carry hand tightening wheels 21. Thus, it will be seen that `the hooks o n the devices 20 detachably engage the uprights 16, and by means of the securing member formed of vthe bars 17 and the.

blocks 18, the uprights may be securely fastened by the adjustable I hand wheels v21. The 'arrangement is also such thatthe uprights maybe fitted to any size window, as the clamp devices 20 permit vertical adjustment, andthe slot between the bars 17 permit horizontal adjustment by sliding the devices 20 transversely, as will be obvious.

The `uprights 16, as shown, are each provided with a bracket 22 vertically adjust- "sill 14 or stone sill 13 may' be engaged; or

tlietwo portions may act together to hook over the stone sill, as shown. 15 28 is upwardly inclined to form a portion 29. This portion 29# has secured thereto by *aU-bolt 30 an'upwardly and outwardly in- Yclinedirame member 31, there being'one of these iframe members at each side Yof the win! Zoldow' opening, as will be understood. The- `'upper ends 'of each o't` these members 31' has made fast thereto by suitable bolts 32, j' a 'split bracket V3?), which brackets adjustably r'carry an outer cross frame member 34, the 25, ends of this cross frame member projecting laterally beyond the brackets 33 to enable adjustment for wider window openings, as shown' in Figure 2.V The split brackets eX- i tend around the member 34, as shown, there 3.0 being other bolts with a spacer 35 be- 'tween the splitbracket 33 to permit easy collapseof the structure when knocking it down, yand to hold the member 34 in place 35 when the derrick is in use.

' `member 24' and outer cross member 34 is a p'ulleysupportor track member 36, its front orq outer end 'being bolted to Ya block 37, which is adjustably connected to the mem- 40'ber 34 by U-bolts 3S, as shown. The inner "end of the track or pulley support 36 isV 'bolted by Ymeans of bolts 39 (see Figures 5 and 6) to a plate 40, the plate in turn being adjustably. secured by U-bolts 41 to the inner or rearY cross frame member 24. y

` Securely bolted to the top side of the outer z end of the track 36 is a casting 42 carrying y, at its upper end a pulley 43 and, at its bottom',av hook 44. A pulley block, compris- 50 ing two spaced plates 45, carries two rollers 46 resting on the track 36, the block car- I rying at its lower end below the track a hoisting pulley 47 around which is fitted in the usual way a rope or cable '48. The tor-` ward outer end of the block carries a pivoted latch 49 for engaging the hook 44. The

latch is provided with an upstanding apertured arm 5() through which is passed a control rope' 51, which also passes around the 50 pulley 43. A stop 52 is formed on the latch,

which stop co-operates with a plate 45 of the pulley block to .limit the movement of the latch up and down.

yl? rom the above detailed description the operation and use of our improved derrick rlhe portion yDisposed Acentrally across the inner cross "so that when the track 36 is placed on the cross pieces vit will befinclined, as shown'. The hoisting pulley block rolls on the track and is locked at .the outer end of the track by the latch 49 and hook 44. A workman vdown von the ground hooks a load ot' materialto one end of the cable or rope 48, as will be readily understood,rand then, by pulling on the other end of said rope, raises the load to the window opening. Another workman on the floor, adjacent the window Vinr which our derrick has been fitted, grasps one end ot' the latch control rope 51, and, pulling the same, unlatches the latch 49 from the hook 44 whereupon the load slides inwardly with the roller mounted pulley block, to enable the workman to swing the load inwardly onto the sill or into the building'through the window opening. After the load has been discharged, the carrier is returned to the outer end ot' the track 36 with the latch automatically locking the pulley in that position, by pulling on the other end of the rope 51. The workman on `the ground then operates the rope 4S and the hoisting operation is thus repeated.

From the above, it should be clear vthat our derrick accomplishes all of the objects sought, and that the same, by the adjustable features provided, may be easily fitted to ydifferent sizes of windows.

It should be understood that we have here disclosed only one embodiment of the invention which it may assume in practice, and that the same is capable of change and modification. It is ourv desire to cover all such changes as fairly fall within the spirit and scope of our invention as indicated in the appended claims.

Vhat we claim as new is:

1. In aV derrick, the combination of uprights adapted to be placed on the inside wall of a window opening, a transverse frame member carrying clamps engaging the uprights and adapted to be disposed at the top o'f the window opening, means adapted to be placed on the outside of the opening for tightening said clamps. said clamps permitting a sliding vertical adjustment ot the transverse Jframe on the upiights through their entire length, and a guide way on the transverse member permitting lateral adjustment of the clamps through substantially the length of the transverse frame member.

2. In a derrick, the combination of uprights adapted to be placed on the inside Wall. of a' Windowk opening,.means adapted for securing saiduprights to the top of the Windowv opening including a, member engaging the uprights, a-sl'otted frame memberr` adapted to be placed onv the outside of the.V

Window opening, the member being verti- `cally adjustable; on' the uprights and laterally adjustablef-in'` said frame member, andy means engaging the member for clamping the frame member to tighten the .member` t'or holding the uprights in place.

3. In a derrick, the combination of up-v rights adapted to be placed on the inside the clamps and uprights may be adjusted laterally substantially the length of said transverse frame.

4. In a derrick, the combination of upright-s adapted to be placed on the inside Wall of a Window opening, clamping means slidably adjustable along the uprights for securing the upperends thereof, a transverse frame bar slidably receiving said clamping means for lateral adjustment through substantially its entire length, said frame bar being vertically movablewith the clamping means, and other means engaging the lower Vends of the uprights for clamping Said lower ends in place. j 5. In a derrick, the combination of uprights adapted to be placed on the inside Wall ot' a Window opening, clamping means slidably adjustable along the uprights for securing the upper ends thereof, a transverse slotted frame bar slidably receiving said clamping means for lateral adjustment through substantially its` entire length,l said trame bar being vertically movable With the clamping means, and vertically adjustable clamping means for clamping the lower ends of the uprights in place.

6. A hoisting derrick comprising stationary uprights adapted to be disposed at the inside of a. window opening, means adapted to be disposed at the outside of the Window ttor securing the uprights to the bottom of the opening, vertically and laterally adjustable means adapted to be disposed on the outside of the Window for securing the uprights to the top of the Window opening, brackets adjustably carried on said uprights, and a cross bar carried on said brackets adapted to support a hoisting means.

v7. A hoisting derrick comprising stationary uprights adapted to be disposed at the inside of a Window opening, means adapted to be disposed at the outside of the Window for securing the uprights to the bottom of the opening, vertically, and laterally/:adjustable means adapted to lbe disposed oniy the outside ofthe Window for securing the upr-ightstdr the top of the window opening,

brackets adjustably carried on said up:-

.rights a cross barcarriedon said brackets,

upwardly and outwardly inclined supports adapted to 4be securedfto the bottom of the Window opening, and a second cross bar carried on the inclined supports, said cross bars being adapted to support a hoisting means. y

8. A hoisting derrick ycomprising station- Y outer cross bar, said cross bars being adapted to support a hoisting means.

9. A hoisting'derrick comprising a stationary frame including supporting members adapted to be disposed at the inside of a Window, laterally adjustable Clamping means adapted to be disposed at the outside of the Window tor securing the frame in place, a cross bar adapted to be adjustably carried on the frame inside the Window, a cross bar adapted to be arranged at the outside of the window,` and laterally adjust- Vable supporting means for the outside cross bar, said cross bars adapted to carry a hoisting means.

10. A hoistingderrick comprising a supsoL porting frame adapted to be disposed inside a Window, means adapted to be disposed atthe outside of the Window for laterallyadjusting and clamping saidframe to the WindoW,-supports adapted to be arranged at the outside of the, Window, means for laterally adjusting the supports and clamping them to the frame, cross bars on the frame and supports, and a laterally adjustable track member carried on said bars adapted to support a traversing hoist.

11. A hoisting derrick comprising uprights adapted to be disposed inside a W111- doW, clamps adapted to be arranged at thc bottom of the Windoweand at the outside thereof, said clamps being adapted to ybe loosened and tightened for laterally adjusting and clamping said uprights to the Window, supports adapted to be arranged at the outside of the Window, said supports being laterally adjustable and adapted to be clamped to the Window by the same clampsv provided with means adapted to support a hoist. l

12. A hoisting derrick comprising uprghts adapted to be disposed inside a Win? dow7 means for permitting laterally adjusting and securing 0f said uprights to the mtting lateral adjustment "of the supports and securing them to thel uprights, cross members carried on the uprghts and the supports, and an inclined track member carried onthe cross members7 said track member adapted to carry a traversing hoist.

- WILLIAM O. BECHMAN.

FRANK G. KNUDSEN. 

